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Precise and efficient colored titanium alloy preparation method adopting laser processing

A technology for laser processing and titanium alloys, applied in the field of titanium alloys and color titanium alloys by laser processing, can solve the problems of limited surface shape and area of ​​processed objects, poor color stability of coatings and easy to fall off, and low efficiency of nano-lithography. The effect of high production efficiency, high selectivity and high precision

Pending Publication Date: 2022-01-21
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a precision and high-efficiency color titanium alloy preparation method using laser processing to solve the problems of the existing titanium alloy surface coloring technology, such as the limited surface shape and area of ​​the processing object, poor coloring stability of the coating, easy to fall off, and complicated oxidation process. Poor universality, heating easily affects the internal properties of the metal, low efficiency and high cost of nanolithography

Method used

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  • Precise and efficient colored titanium alloy preparation method adopting laser processing
  • Precise and efficient colored titanium alloy preparation method adopting laser processing
  • Precise and efficient colored titanium alloy preparation method adopting laser processing

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Embodiment 1

[0034] Such as Figure 1-3 As shown, the precision and high-efficiency color titanium alloy preparation method using laser processing includes the following steps:

[0035] Step 1. Put the TC4 titanium alloy with no obvious defects on the surface into 95% absolute ethanol, and only use 1000KHZ frequency for ultrasonic cleaning. After 10 minutes, take it out and dry it, and then place it on the processing table of the infrared picosecond laser;

[0036] Step 2. Use the ezCAD software that can control the work of the scanning galvanometer to select the laser parameters and processing parameters according to the surface coloring requirements, specifically laser pulse width: 7.5ps; laser wavelength: 1080nm; scanning speed: 50-200mm / s; average power : 6 ~ 8w; repetition frequency: 300 ~ 700kHz scanning spacing: 10 ~ 50μm;

[0037] Step 3. Do not open the laser shutter, only open the indicator light to scan the path, confirm the laser processing position, open the laser shutter aft...

Embodiment 2

[0050] Such as figure 1 and 4 As shown, a: It is only necessary to use the circle to divide the processing area directly in ezCAD and perform horizontal / cross filling and processing according to the processing parameters of the corresponding color.

[0051] b: The image to be processed needs to be partitioned according to the color, and the areas with the same color number are extracted and saved in BMP format, and then several BMP images are imported into ezCAD software for graphic scanning and processing. Different images use the corresponding color parameter settings It can be processed sequentially. Taking b as an example, the processed image used in b is as follows Figure 4 As shown, the overlap problem caused by the size of the laser spot is considered during processing. It is best to process the large-area background color of the image first, and then process the key outline of the image.

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Abstract

The invention discloses a precise and efficient colored titanium alloy preparation method adopting laser processing, belongs to the field of colored titanium alloy laser processing, and aims to overcome the defects that in an existing titanium alloy surface coloring technology, the surface type and the area of a processed object are limited, a coating is prone to falling off during coloring, the oxidation process is complex, the nanometer photoetching efficiency is low, and the cost is high. The method comprises the following steps: cleaning and airing a titanium alloy, and then placing the titanium alloy on a processing table of an infrared picosecond laser; using ezCAD software capable of controlling a scanning galvanometer to work for selecting laser parameters and machining process parameters according to the surface coloring requirement; performing laser coloring; and performing cleaning again and airing. The heat effect of picosecond laser processing is far lower than that of nanosecond laser processing, and damage to materials is small; the cost is lower than that of femtosecond laser processing and the efficiency is higher; the method has no special requirements on the environment, is simple and can easily achieve automatic processing; the size of the processed object is unlimited; a product with a complex structure can be colored by matching with a processing platform; and material surface pretreatment is simple, green and environment-friendly.

Description

technical field [0001] The invention relates to a precise and high-efficiency color titanium alloy preparation method using laser processing, and the invention belongs to the technical field of titanium alloys, in particular to the technical field of laser processing color titanium alloys. Background technique [0002] Titanium alloys have the characteristics of low cost, light weight, excellent corrosion resistance, stable chemical properties, and high biocompatibility. Now it has a wide range of applicability and occupies an important position in the fields of aerospace material manufacturing, medical equipment, sports equipment, and electronic components. With the development of society and science, new requirements are put forward for the optical performance, color characteristics and appearance decoration of the material surface. Products with colored surfaces have gradually become a new aesthetic demand of consumers, so surface coloring technology has become a current...

Claims

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Application Information

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IPC IPC(8): B23K26/60B23K26/00
CPCB23K26/60B23K26/00B23K2103/14
Inventor 黄滟荻宋成伟杨亮刘峰李国张春雨朱磊张昭瑞
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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